Wabaunsee Group

Interval includes Howard, White Cloud, Scranton, Bern, Auburn, Emporia, Willard, Zeandale, Pillsbury, Stotler, Root formations. Primary Lithologies: shale, light to dark gray; mudstone, gray, part laminated silty to sandy. Secondary Lithologies: limestone, fossiliferous, part coated grain/Osagia; pedogenic mudstone, part red to maroon, part calcareous/nodular; siltstone to very fine sandstone. Minor: black shale; coal. Maximum thickness 320 ft (98 m) in Fremont County.
State Iowa
Name Wabaunsee Group
Geologic age Upper Pennsylvanian, middle-upper Virgilian
Lithologic constituents
Sedimentary > Clastic > Mudstone (Bed, Calcareous)gray, part laminated silty to sandy; minor pedogenic mudstone, part red to maroon, part calcareous/nodular
Sedimentary > Clastic > Mudstone > Shale (Bed)light to dark gray
Sedimentary > Carbonate > Limestone (Bed)fossiliferous, part coated grain/Osagia
Sedimentary > Clastic > Siltstone (Bed)siltstone to very fine sandstone
Sedimentary > Coal (Bed)
Sedimentary > Clastic > Mudstone > Shale > Black-shale (Bed)

Witzke, Brian J., Anderson, Raymond R., and Pope, John P., 2010, Iowa Geological and Water Survey, DNR, Bedrock Geologic Map of Iowa, OFM-2010-1. Scale 1:500,000.

NGMDB product
Counties Adams - Cass - Fremont - Mills - Montgomery - Page - Taylor